I have rebuilt and optimized gcc and several math libraries with the
architecture-specific options of gcc, `-march=native' and
`-mfpmath=sse', to get the most out of my old box. This strategy has
proven successful; my gcc build runs noticeably faster than the
distribution version. Ultimately, I hope to build an ffmpeg that also
runs a bit faster. (As things are, ffmpeg can take *days* to recode a
feature-length video on my box.)

Following the instructions in section 6.21 of the FAQ, I installed the
various build tools (cocom, etc.) and then...

Really, all I need from the Newlib-Cygwin package are libm and the
Cygwin dll, optimized by being built architecturally specific so that I
can build ffmpeg (and maybe some other things, similarly optimized) on
this platform, and hope they do not take days to complete a job.

Please help?
Jeff

By the way, how is cocom to be used to build Newlib and the DLL? What
little documentation that comes with the Cygwin package is.... intriguing...